VST is a trademark of Steinberg Soft- und Hardware GmbH-Support for VST instruments (VSTi) with up to 16 outputs using all 8 stereo aux busses. -Convert VST Instruments to audio quickly and easily by mixing tracks. -Real-Time low latency software audio play-through with effects while recording dry signal. -Mapping of MIDI controllers to effects parameters for real time control. This, for example, enables the -use of a foot controller to control the Wah effect of a real time amp simulator plug-in. you can free download Metro 6.4.5 now.